Roll Grooving Dimensions per ISO/FDIS 6182-12 Table 1
For ISO 4200:1991 Plain-end Steel Tubes, Welded and Seamless (Superseding BS 1387 and DIN 2440 & DIN 2448)
Figure 1 - Roll Grooved-End Dimensional Reference Points for Table 1
Dimensions in millimeters
a See Figure 1 for dimensional diagram
b Dimension for reference only, groove diameter is determined by C.